201222142 has 8 divisors (see below), whose sum is σ = 329272632. Its totient is φ = 91464600.

The previous prime is 201222121. The next prime is 201222163. The reversal of 201222142 is 241222102.

It is an interprime number because it is at equal distance from previous prime (201222121) and next prime (201222163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573209 + ... + 4573252.

It is an arithmetic number, because the mean of its divisors is an integer number (41159079).

Almost surely, 2^201222142 is an apocalyptic number.

201222142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201222142 is a deficient number, since it is larger than the sum of its proper divisors (128050490).

201222142 is a wasteful number, since it uses less digits than its factorization.

201222142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146474.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 201222142 is about 14185.2790596449. The cubic root of 201222142 is about 585.9923178063.

Adding to 201222142 its reverse (241222102), we get a palindrome (442444244).

The spelling of 201222142 in words is "two hundred one million, two hundred twenty-two thousand, one hundred forty-two".